The General Electric Service Department Believes That the Median Time

question 32

Multiple Choice

The General Electric service department believes that the median time for a service call should be 30 or fewer minutes.To test this,the following random sample of service times was collected: Given that the managers do not wish to make the assumption that the population is normally distributed,the appropriate statistical test for testing about service times is:

• A)the t-test.
• B)the Kruskal-Wallis test.
• C)the Wilcoxon signed rank sum test.
• D)the F-test.

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Definitions:

Selectively Permeable

A property of cell membranes that allows some substances to pass through while blocking others.

Intracellular Fluid

The liquid found inside the cells of the body, constituting about two-thirds of the total body water and playing a key role in cellular function and metabolism.

Depolarization

The process during the action potential when a cell's membrane potential becomes less negative, moving towards zero.

Aldosterone

A hormone produced by the adrenal glands that regulates blood pressure by controlling sodium and potassium levels in the body.